Perception of longitudinal body axis in patients with stroke: a pilot study
Perception of longitudinal body axis in patients with stroke: a pilot study
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DOI：
10.1136/jnnp.2006.089961
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发表时间：
2007-01-01
影响因子：
11
通讯作者：
Perennou, D.
中科院分区：
文献类型：
--
作者：
Barra, J.;Chauvineau, V.;Perennou, D.
背景和目标：探讨半球卒中患者可能感觉到他们的纵向身体轴（LBA）在额面旋转的假设。这种错误在一个自我中心的参考框架可能是有害的姿势，倾斜的LBA将意味着一个不平等的身体质量分布关于真正的vertical.Method：26名健康受试者年龄匹配的18例中风患者参加了这项研究。18名患者在首次左半球（n = 8）或右半球（n = 10）卒中后平均80天接受测试。受试者通过调整绕背中脉轴旋转的发光棒的方向来感知他们的LBA。参与者进行了研究，在仰卧位分离的躯体感觉线索graviceptive cooks.Results：中风患者认为他们的LBA旋转到contralesional侧与对照组相比（p = 0.004）。对于所有对照组和10例卒中患者，感知LBA非常接近真实LBA（平均值（SD）0.24度（1.31度））。对于8例中风患者（6例右中风，2例左中风），感知的LBA从真实的身体方向旋转到与病变侧相反的方向（范围3-9.5度，平均5.2度）。这8名患者通过触觉操作棒（无视觉）提供了相似的估计值。知觉LBA的旋转对于右半球中风更为明显。知觉旋转的幅度与感觉丧失，空间忽视的迹象和姿势和步态disability.Conclusion的程度：这是第一次研究表明，某些患者半球中风感知他们的LBA旋转到contralesional侧。知觉协调的后果对他们的姿势障碍有影响。
Background and aims: To investigate the hypothesis that patients with a hemisphere stroke may perceive their longitudinal body axis (LBA) rotated in the frontal plane. This error in an egocentric frame of reference could be detrimental to posture, as tilted LBA would imply an unequal distribution of body mass about the true vertical.Method: 26 healthy subjects matched in age with 18 patients living with stroke participated in the study. The 18 patients were tested on average 80 days after a first left (n = 8) or right (n = 10) hemisphere stroke. Participants perceived their LBA by adjustments of the orientation of a luminous rod pivoting around a dorsonavel axis to the subjective direction of LBA. Participants were studied in the supine position to dissociate somaesthetic cues from graviceptive cues.Results: Patients with stroke perceived their LBA rotated to the contralesional side in comparison with controls (p = 0.004). For all controls and 10 patients with stroke, the perceived LBA was very close to true LBA (mean (SD) 0.24 degrees (1.31 degrees)). For eight patients with stroke (six right stroke, two left stroke), the perceived LBA was rotated from true body orientation in the direction opposite to the lesioned side (range 3-9.5 degrees, mean 5.2 degrees). These eight patients provided similar estimates by tactile manipulation of the rod (without vision). The rotation of perceived LBA was more pronounced for right-hemisphere strokes. The magnitudes of perceptual rotations correlated with sensory loss, signs of spatial neglect and the degree of postural and gait disability.Conclusion: This is the first study showing that certain patients with a hemisphere stroke perceive their LBA rotated to the contralesional side. The consequences for perceptuomotor coordination have implications for their postural disorders.